i was running a 1.9 with a ported head a big intercooler and a few other stuff i had it set up on mfi and was rr'ed at 200 @wheels with 12 psi, imo and personal preferance running a 2.1zvh is the option for me because if i want more power i can change the management and rods and push for 300+ to get that kind of power out of a cvh all the internals need changing costing 600+ then still needing management. why im not running a zetec head is due to the cost of management as like alot of people can't afford it all at once. that just my opinion
juffer